There is a small problem with the suction of the sulfur and ammonia induced draft fan.
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There are 4 induced draft fans in the sulfur and ammonia production section of my unit. The model is 9-26-80, the flow rate is 13001m3/h, the total pressure is 3421Pa, the fan speed is 1450r/min, and the motor power is 30kw. Recently, it has been found that the suction power has decreased and the dust removal effect is poor. After checking, there are no leaks in each section of the fan suction pipe, and there is no material blockage in the pipeline. What is the reason for the current situation? The induced draft fan is on the fourth floor, connected to the hot and cold fans on the second floor, the drying bed, and the cyclone dust collector on the third floor. The outlet of the induced draft fan is connected to the water mist dust collector. The outlet suction is very small. The pressure gauges of each pipeline should be negative pressure but they all show positive pressure. This situation has not happened before. Please help me, thank you!
Your system is a relay system. If there is a problem with one of the fans, the problem you mentioned may occur. It is recommended to check from the 2nd floor to the 4th floor. Does this happen to the four fans at the same time? Four fans are used in 4 systems or four fans are used in one system?
The 4 fans are two systems, divided into two phases with two fans in each phase. However, the problem of low suction occurs at the same time. It should not be caused by the instability of one unit. Thank you.